Colonoscopy on Tuesday I am afraid I won't go.....?

I have some on here I talk to regular, I have my colonoscopy scheduled for Tuesday for bleeding on bowel movements. I am 33. Everytime I go to restroom and have bowel movement, whether its once a day or 4 times a day, there is always red. Im scared its colon cancer cause there IS blood EVERYTIME, alot of times its streaked in a straight line, but its always there. I have a fear I will talk myself out of going and I really want to go so I can get it over with, I am afraid of what theyll tell me is wrong........ Just looking for words of encouragement. Thanks to those who I know will give me those words.